ESR studies on laser beam irradiated polyethyleneterephtalate
- 作者：Chipara ; M. ; Reyes Romero ; J. ; Chipara ; M.D. ; Georgescu ; L. ; Constantinescu ; L. ; Secu ; C. ; Morosanu ; C.
- 关键词：61.82.Pv ; 76.30.Rn ; Polyethyleneterephtalate ; Electron spin resonance ; Laser irradiation ; Free radicals ; Kinetics
- 刊名：Nuclear Instruments and Methods in Physics Research Section B ; Beam Interactions with Materials and Atoms
- 出版年：2003
- 期刊代码：42_0168583x
- 类别：ph
- 出版时间：September, 2003
- 卷：211
- 期：1
- 页码：117-121
- 文件大小：108 K
摘要
Electron spin resonance investigations on polyethyleneterephtalate irradiated with a YAG-Nd laser are reported. The dependence of electron spin resonance spectra on the incident laser beam intensity (power) is studied. It is noticed that the concentration of free radicals has a sigmoidal dependence on the crystal current, presenting saturation at high incident powers. The nature of free radicals induced by laser irradiation is discussed.